TMZ reported Thursday the former "Happy Days" and "Joanie Loves Chachi" star filed a police report over the Saturday incident in Thousand Oaks, California, and the Ventura County Sheriff's Office is investigating. TMZ says Baio told law enforcement that Nancy Mack confronted him at an event he was attending with his daughter. The report says Baio told investigators that Mack attacked him by grabbing him under his arms and shaking and pushing him.

Renee Baio repeated those claims on Twitter and also posted a picture of Mack taken from video she says she has of the incident. Scott Baio also shared his wife's tweets.